Ultrasonic imaging of electrofusion welded polythene pipes employed in utilities industry

Arjun Prakash Thattaliyath Kadumberi, Richard O'Leary, Anthony Gachagan

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Abstract

Electrofusion welding (EFW) is a widely used technique for joining polyethylene pipes in the oil, gas and water industry. Like many welding and joining methods, the joints created by EFW can exhibit a range of flaw types that can be attributed to process variables such as: poor preparation of the parent material, contamination of the weld surfaces prior to welding and operator and/or equipment failure during the welding process. This paper describes ultrasonic testing using 128-channel linear array with a DYNARAY system to acquire data from a range of joints created using EFW. The samples were created in the laboratory with a range of defects that represent those commonly observed in the field. The samples were subsequently destructively tested using tensile testing of the coupling-pipe interface. Good corroboration was achieved between the observed weld quality from the ultrasonic data and the weld strength
determined by the destructive testing.
Original languageEnglish
Title of host publication51st Annual Conference of the British Institute of Non-Destructive Testing 2012 (NDT 2012)
Subtitle of host publicationProceedings of a meeting held 11-13 September 2012, Northamptonshire, UK.
Place of PublicationNorthampton
Pages129-139
Number of pages10
Publication statusPublished - 11 Sep 2012
EventBINDT 51st Annual Conference - Northampton, Daventry, United Kingdom
Duration: 4 Sep 20126 Sep 2012

Conference

ConferenceBINDT 51st Annual Conference
CountryUnited Kingdom
CityDaventry
Period4/09/126/09/12

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Keywords

  • polythene pipes
  • ultrasonic imaging
  • electrofusion welded
  • utilities industry

Cite this

Thattaliyath Kadumberi, A. P., O'Leary, R., & Gachagan, A. (2012). Ultrasonic imaging of electrofusion welded polythene pipes employed in utilities industry. In 51st Annual Conference of the British Institute of Non-Destructive Testing 2012 (NDT 2012): Proceedings of a meeting held 11-13 September 2012, Northamptonshire, UK. (pp. 129-139). Northampton.